Bursty bulk flow driven turbulence in the Earth's plasma sheet

被引:48
作者
Voros, Z. [1 ]
Baumjohann, W.
Nakamura, R.
Volwerk, M.
Runov, A.
机构
[1] Austrian Acad Sci, Inst Space Res, A-1010 Vienna, Austria
[2] Max Planck Inst Extraterr Phys, D-37075 Garching, Germany
关键词
turbulence; plasma sheet; bursty flows;
D O I
10.1007/s11214-006-6987-7
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
During the last several years significant progress has been made in understanding MHD turbulence in the Earth's plasma sheet. Due to the statistically transitory properties of fluctuations, finite size and boundary effects, however, issues of fundamental importance remain unresolved. Here we concentrate on such intrinsic features of plasma sheet turbulence as its origin and dynamical nature. In particular, we investigate bursty bulk flow driven multi-scale transfer of energy towards the dissipation scale, and provide evidence for the presence of non-linear interactions. We show that, in contrast with previous results, Alfvenic fluctuations together with 2D eddy interactions may appear as important constituents of turbulence in the plasma sheet.
引用
收藏
页码:301 / 311
页数:11
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